Pentair Purex 2000 Series Backwash - SM, SMBW Filter Valve O-ring Kit Pentair Purex 2000 Series Backwash - SM, SMBW Filter Valve O-ring Kit Includes: #5, #14, #13 Quality TORK replacement parts fits 1981 - curent valves order will arrive as shown in picture, anything less is not a TORK brand